Tool-grinding machine for railway hand-cars.



PATENTED MAY 3, 1904. J. GRASSMANN. TOOL GRINDING MACHINE FOR RAILWAYHAND CARS.

APPLICATION FILED MAY 28, 1903.

2 SHEET88KEBT 1.

N0 MODEL.

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No. 758,833. PATENTED MAY 3, 1904 J. GRASSMANN. TOOL GRINDING MACHINEFOR RAILWAY HAND CARS APPLIUATION FILED MAY 28, 1903.

N0 MODEL. 2 SHEETSBHEET 2.

Patented May 3, 1904.

PATENT QEEICE.

JOHN GRASSB'L NN, OF DAVENPORT, IOW A.

TOOL-GRINDING MACHINE FOR RAILWAY HAND-CARS.

SPECIFICATION forming part of Letters Patent No. 758,833, dated May 3,1904.

Application filed ay 28, 1903.

To 1/ whom it Tim/y concern:

Be it known that 1, JOHN GRASSMANN, a citizen of the United States,residing at Davenport, in the county of Scott and State of Iowa. haveinvented a new and useful 'lool-Grinding Machine for-RailwayHand-Cars,of which the following is a specification.

My invention consists of mechanism attachable to the side edge of theplatform or floor of the ordinarily-used railway section or track workhand-car and having a revolving shaft adapted to carry one or another ofdifferent sizes of gririding-wheels, the motive power of the car beingsupplied to said shaft by contact between a friction-pulley thereonresting on top of or against one of the driving-wheels of the car, thedrive-wheel end of the car being supported while operating thegrindingwheel to free such driving-wheels from contact with the groundor track, or, if necessary, the device may be used while the car isbeing operated for locomotion.

The utility of the device consists in the workmen while using thehand-car having in this combination a power grinding-machine convenientat hand for sharpening tools while at work at a distance from shop orother place where heretofore it has been necessary to have such grindingdone.

In the drawings, Figure 1 is a side elevation of a railway hand-carhaving my toolgrinding device attached. Fig. 2 is a side elevation ofthe device detached and on a larger scale than in Fig. 1 Fig. 3 is a topview of the device detached. Fig. 4 is an end view showing that part ofthe device to the.

right of branch arm K on Fig. 3. Fig. 5 is a side elevation of thecar-supporting truss, showing also a front view of hook N. Fig. 6 is aside and front view of wedge-block 0. Fig. 7 is a side elevation of thehand-car, the grinding mechanism, and the car-supporting truss incombination, constituting my toolgrini'ling machine, said truss beinglodged on the car end at the left in the drawing. Fig. 8, Sheet 1, is adifferent view without reference-letters of parts of thegrinding-machine shown and referred to by letters in Fig. 4 of saidsheet.

Referring to the drawings, a standard or Serial No. 159,132. (No model.)

upright A, made of iron or other material of suitable strength, isprovided of sufiicient length to extend vertically across the side edgeof the ordinary railway hand-car frame and floor, thence a properdistance above such floor, said upright being fastened rigidly to saidframe between the forward and rear wheels of the car by clamp-plate B,as shown in full and dotted lines in Figs. 1 and 2, behind saidframe-pieces X X by tighteningbolt C, engaging said upright andclampplate, the lower portion of said upright being provided with a rowof holes rt for said bolt to permit adjustment of said upright at thedesired height on the car.

Arm D is made ofiron or othersuitable material and is hung at or nearone end with a view to the oscillation up and down of its free end bypivotshaft E, extending inward from and at right angles with said armand parallel with the car-axle through hearings or holes a and (L2 inthe upper portion of upright A, said pivot-shaft being fastened rigidlyin one of the series or rows of perforations (Z, preferably square,provided in said arm for convenient adjustment thereof on said uprightwith reference to the drivewheel of the car, the outward end of saidpivot-shaft 1*] conforming in size and shape to such perforations andbeing fastened therein by bolt 0', screwed into such end with the headof said bolt bearing against the outward face of arm I). Encircling saidpivot-shaft and rigid therewith is shoulder or flange c bearing againstarm D when drawn up by bolt (1 and also serving as a washer against saidupright. Said upright may be forked at its upper portion to provide forthe two bearings a and (0 which are desirable for greater stanchness insupporting arm D on its pivot-shaft; but, as shown in the drawings, theupper end of the upright may have a downward bend or hook away from armD for bearing Said pivot-shaft is secured in said bearings by bolt 0screwed into the inside end of said pivotshaft. Between bearings a anda" said pivotshaft carries coil-spring F, anchored thereto and coilingabout and over said pivot-shaft in the direction of driving-wheel J ofthe car, the unanchored end of said spring being bent to hook into adepressiona on the face of the upright A, whereby said spring will tendto revolve said pivot-shaft and give a downward tendency to the free endof arm D by a force over and above that of gravitation, said arm D bybeing thus hinged being also adapted to be held up from its operatingposition in connection with the car-wheel, as by a dog or other suitablemeans acting between said arm and the vertical plane of itssupporting-upright A, without separation of the parts from each other orfrom the car.

Near its free or forward end (so called because in grinding tools theoperator will face the driving-wheel of the car, usually the rearwheels) armD is provided with a fork-arm D, extending outwardtherefrom,then forward on ahorizontal plane, and parallel therewith,said fork-arm D and arm D carrying, respectively, bearings d and (Pen aline parallel to the axle of the car, in which bearings revolves shaftG, carrying rigid thereto and between fork-arm D and arm Dfrictionpulley H, whose circumferential plane is opposite that ofdriving-wheel I of the car, so that when the forked end of arm D isbrought downward by gravity or the force of coil-spring F saidfriction-pulley and driving-wheel may come into contact with sufiicicntforce to transmit power from the latter wheel to said shaft G. Saidpulley H is made sufficiently large to hold arm Dand fork-arm D off fromsaid driving-wheel, and said shaft G extends both ways beyond thetransverse faces of said driving-wheel a sufiicient distance to permitsecuring rigidly on the ends thereof, by any approved means forconvenient mounting, an emery or other grinding wheel J and of greaterdiameter than that of said friction-pulley, only one such grindingwheelbeing shown in the drawings.

Fork-arm D has a branch arm K extending back thereof a short distanceand parallel to arm D, in which branch arm K is provided an elongatedhorizontal slot k, extending horizontally therethrough, in which slot issecured the pivot-arm Z of the tool-rest L, extending upwardly at rightangles to its pivot-arm, said arm being rigid to said tool-rest, andsaid slot being adapted to permit setting said rest at any desired pointon branch arm K by means of nut Z, screwed on the inside end of saidpivot-arm Z.

For the purpose of holding the end of the hand-car up to free thedriving-wheels for independently operating the grinding device,hereinbefore described, I provide a truss, consisting of partshereinafter described, in connection with a bar especially provided, or,for economy and convenience, with such bar as is commonlyin use withsuch cars-namely,

a crow or pinch bar. This bar is given the letter M in the drawings,Sheet 2, and is designed to have rest on the ground and inclinelongitudinally with the car and over the driving-wheel end thereof,extending through aperture n in hook N, which upwardly engages thedriving-wheel end of the car-frame. Said hook N is suificiently strongto sustain the weight of the car end, as well as the added resistance toits shank in forming said truss, having a wide engaging point and beingflat throughout to afford a wide contact-surface against the car,tending to prevent its tipping sideward. The upper part of saidhook-shank inclines away from the car and has therein the said aperture91, which is elongated and longitudinal with said hook-shank to permitadjustment of bar M by reason of variation in its incline when restingin said aperture. A wedge-block O is provided, adapted when the car endis raised to free the driving-wheels from the ground to be set up towardthe car in the angle of said inclined hook-shank and said bar to bindthe latter in said aperture'n, said wedge-block having on its uppersurface a series of horizontal teeth or cogs adapted to engagecorresponding cogs on the under surface of the inclined hook-shank, agroove being provided on the under surface of said wedge-block adaptedto receive said bar and tending, further, to prevent swerving sidewiseof said bar and car. Guides n 12 are provided on either edge of saidhook-shank to hold said wedge-block plumb against it When blockedagainst said bar. Said block 0 is hung to said shank on rods a nextending horizontally from either side thereof through eyes 0 0 on thecorresponding sides of said block and having heads to confine said blockthereon.

I claim 1. In a tool-grinding machine adapted to be carried by a railwayhand-car and operated by the motive power thereof, an upright detachablyfastened to the hand-car frame, an arm pivoted therein and adapted tooscillate up and down, a pivot-shaft rigid on said arm and journaled insaid upright, a coil-spring on said pivot-shaft, the grinding-wheelshaft carrying rigid thereon a friction-wheel and journaled in theoscillating end of said arm in position to bring said friction-wheel torest on the cardriving wheel and be revolved thereby and be accommodatedby said oscillating tendency to any unevenness in the car-wheel, or beheld entirely away therefrom independently of attachment to the car,pivot-shaft apertures on said arm and bolt-holes in said upright foradjustment of the arm and upright respectively, a truss adapted to holdup the car end, whereby the car-driving wheels are relieved from contactwith the ground or track for independent operation of thegrinding-machine.

2. In a tool-grinding machine adapted to be fastened detachably to theside and end of a railway hand-car and be operated by its metive power,an oscillating arm, a pivot-shaft rigid thereon and journaled in anupright adapted to be clamped rigid on the car, a spring anchored to andcoiled around said pivot-shaft with its free end bearing against saidupright. a friction-wheel rigid on a grinding-wheel shaft journaled inthe oscillating end of said arm in position whereby the friction-wheelis adapted to rest against the cardriving wheel and be revolved thereby,said spring being adapted to give downward pressure to the oscillatingend of said arm and to assist in maintaining contact between thecarwheel and friction-wheel in grinding on the lateral plane of thegrinding-wheel, an upwardly-cleaving hook adapted to engage the carframeend, an aperture in said hook above the car-floor plane, a bar extendingthrough said aperture and resting on the ground, and means for bindingsaid bar in said aperture at any desired position, whereby the car endis held up to relieve the driving-wheels from contact with the ground ortrack.

3. The combination, in a tool-grinding machine adapted to be used inconnection with a railway hand-car and be operated by the motive powerthereof, of an upright detachably fastened to such car, a pivot-shaft insaid upright rigid to an arm, adapted to rest in or be held away fromposition for grinding, said pivot-shaft having a coil-spring anchoredthereto, a shaft on said arm carrying grinding-wheels, and afriction-wheel adapted to make contact with the car-driving wheel, atool-rest, a hook having a broad grasping point and surface upwardlylodged on the car end and having an upwardly-extending shank with itstop inclined away from the car, an elongated aperture in said shank, abar having rest on the ground and inclined longitudinally over said carand through said aperture, a wedge-shaped block in the angle of said barand hook-shank, having underneath a groove adapted to receive said bar,and on the upper surface thereof horizontal cogs or teeth adapted toengage corresponding cogs on the under surface of said inclinedhook-shank, guides for said block projecting downward from the sides ofsaid hook-shank, whereby said block is locked against said bar forming atruss sustaining the car end when lifted to free the driving-wheels fromthe ground, rods on said hook-shank adapted to slide in eyes on saidwedge-block and having heads to confine said block thereon.

J OH N GRASSMANN.

lllilri Witnesses:

James QUINN, G-Eo. J. PACIUIAN.

